Ship&#39;s davits.



A. D. BURBRIDGE.

SHIPS DAVITS.

APPLICATION FILED FEB. 3, 1913 1,084,81 0.. Patented Jan. 13, 1914.

COLUMBIA PLANQGRAPH con WASHINGTON. n. c.

TTNTET) STATES PATENT OFFIQE.

AUGUSTUS DAVID BUBBRIDGE, OF LONDON, ENGLAND.

SHIPS DAVITS.

inseam.

Application filed February 3, 1913.

To all 207mm it may concern:

Be it known that I, Aucus'rus DAVID BUR- nmnou, of li Iadura, 29 /Vinchenden road, T eddington, London, England, master mari ner, have invented certain new and useful Improvements in and Relating to Ships Davits, of which the following is a specification.

This invention which relates to ships davits. has for its object to secure greater :pc :lition in launching life boats, and that according to these improvements two life boat-s can be stowed in the same deck space as presently occupied by one, and when ready for sea every part is securely inboard.

The invention consists of an ordinary ships davit mounted with two heavy forged or steel collars carrying a smaller davit beneath the arms of the said main davit and designed to turn upon the aforesaid forged collars. In another form the arms of both the larger and smaller davits may be made straight, projecting at right angles from the column or stanchion of the davit and supported upon collars on top of the column or stanchion.

In order that my invention may be properly understood and readily carried into effect I have hereunto appended one sheet of drawings, of which Figure 1 is a fore or aft view of the double davit with the upper boat outboard attached to the main ships davit and the smaller davit inboard attached to the lower boat which is supported in a cradle on the deck. Fig. 2 is a similar view to Fig. 1 illustrating the second type of double davit. Fig. 3 is a plan corresponding to Fig. 2. Fig.

4 is a plan in which the davits are shown as they would be when ready for sea, all substantially hereinafter described.

A is the ordinary or main davit.

B, C, are the two heavy forged collars shrunk on to the aforesaid main davit.

D is the smaller davit carried upon and turning within the forged collars B, C, aforesaid.

E and F are collars upon the smaller davit D for guiding the same between the larger collars B, C of the main davit, and G is a Specification of Letters Patent.

Patented Jan. 13, 1914.

Serial No. 746,027.

locking pin for locking the smaller davit either in the inboard or outboard position.

The dotted lines illustrate the main davit in relationship to the smaller davit ready for use, while the full lines show the main davit in the position for launching the life boat 0. 7

Referring to Figs. 2 and 8, I is the main pillar or stanchion mounted with the two arms J, K, which constitute the double davit. L is a fixed collar which supports the arm K. The upper end of the main pillar is reduced in diameter and the arm J rests within it and is supported on the shoulder. M and N are locking pins for locking the arms either in the outboard or inboard position, these pins may either be vertically disposed as shown at M, N, in Fig. 2, or horizontally as shown at M, N in Fig. 3.

Referring to Fig. 4, the davits K are turned inboard as opposed to the position they occupy in Fig. 3. O, P, indicate the boats, 0 being suspended on the davit J, and P carried in the deck cradle.

The operation is as follows :-The upper boat is always suspended ready for the immediate launching, but before putting it outboard the small davits are swung around to the outboard position and the locking pin inserted. The movement of the upper boat outboard will thus bring the small davits inboard over the lower boat and the attachment of this lower boat to the small davits is carried out while the upper boat is being lowered into the water. Immediately the upper boat is safely launched and the tackles free the main davits are pulled inboard so that the lower boat is carried safely out-board and thence launched.

Claims.

1. The combination with a standard; of a davit comprising a vertical portion rotatably mounted in said standard and a laterally extending arm, a pair of spaced collars fixed on the vertical port-ion of said davit and provided with alined openings, and a secondary davit pivotally mounted in the opening of said collars.

2. The combination with a standard; of a davit comprising a vertical portion rotatably mounted in said standard and a laterally extending arm, a pair of spaced collars fixed In testimony whereof I affix my signature on the vertlcal portlon of sald davlt and 1n presence of two W1tnesses. provlded W1th allned openlngs, and a secondary clavit pivotally mounted in the open- AUGUSTUS DAVID BURBRIDGE' ing of said collars, and means to look the Vitnesses:

secondary davit in adjusted position on said H. T I-IERS'ION SAKER,

collars.

ANDREW DOSSAHDAY KHAMBATTOR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

